public class SortedSetDocValuesFacetCounts extends Facets
SortedSetDocValuesFacetField
,
without require a separate taxonomy index. Faceting is
a bit slower (~25%), and there is added cost on every
IndexReader
open to create a new SortedSetDocValuesReaderState
. Furthermore, this does
not support hierarchical facets; only flat (dimension +
label) facets, but it uses quite a bit less RAM to do
so.
NOTE: this class should be instantiated and
then used from a single thread, because it holds a
thread-private instance of SortedSetDocValues
.
NOTE:: tie-break is by unicode sort order
Constructor and Description |
---|
SortedSetDocValuesFacetCounts(SortedSetDocValuesReaderState state)
Returns all facet counts, same result as searching on
MatchAllDocsQuery but faster. |
SortedSetDocValuesFacetCounts(SortedSetDocValuesReaderState state,
FacetsCollector hits)
Counts all facet dimensions across the provided hits.
|
Modifier and Type | Method and Description |
---|---|
java.util.List<FacetResult> |
getAllDims(int topN)
Returns topN labels for any dimension that had hits,
sorted by the number of hits that dimension matched;
this is used for "sparse" faceting, where many
different dimensions were indexed, for example
depending on the type of document.
|
java.lang.Number |
getSpecificValue(java.lang.String dim,
java.lang.String... path)
Return the count or value
for a specific path.
|
FacetResult |
getTopChildren(int topN,
java.lang.String dim,
java.lang.String... path)
Returns the topN child labels under the specified
path.
|
public SortedSetDocValuesFacetCounts(SortedSetDocValuesReaderState state) throws java.io.IOException
MatchAllDocsQuery
but faster.java.io.IOException
public SortedSetDocValuesFacetCounts(SortedSetDocValuesReaderState state, FacetsCollector hits) throws java.io.IOException
java.io.IOException
public FacetResult getTopChildren(int topN, java.lang.String dim, java.lang.String... path) throws java.io.IOException
Facets
getTopChildren
in class Facets
java.io.IOException
public java.lang.Number getSpecificValue(java.lang.String dim, java.lang.String... path) throws java.io.IOException
Facets
getSpecificValue
in class Facets
java.io.IOException
public java.util.List<FacetResult> getAllDims(int topN) throws java.io.IOException
Facets
getAllDims
in class Facets
java.io.IOException
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